Notes: Poor side crash test ratings from the IIHS are really no surprise.


pretty bad
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
4,724 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2012 Jeep Wrangler engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2012 Jeep Wrangler:

Unsubscribe any time. We don't sell/share your email.

2012 Jeep Wrangler Owner Comments

problem #4

Apr 272013

Wrangler 4WD 6-cyl

  • 17,500 miles


Check engine. Light came on.took it to dealer. Dealer said the computer was reading # 2 cylinder mis- fire. The dealer said that my on board computer didn't take a forced upload of new software from Chrysler, so they did it in shop. They said that would fix it. On May 13th while sitting in line at the bank, the check engine light came back on, drove to dealers second location. At that location I was told that the motor needed major work the #2 cylinder, rocker arm, and cylinder head need to be replaced.

- Mechanicsville , VA, USA

problem #3

Jan 012011

Wrangler 6-cyl

  • 1,000 miles
Loud ticking noise from left engine bank. At idle and driving. Increase ticking with increased RPM.

- Spring, TX, USA

problem #2

Mar 032012

Wrangler 6-cyl

  • 17 miles
Purchased a 2012 Jeep Wrangler sport on 3/3/12 at roughly 2pm cst. At about 4pm cst, I parked the Jeep in my apartment's parking garage. I decided at about 6pm cst to go get some dinner, and to cruise around as well in the new vehicle. I observed smoke coming from the parking garage, and when I got into the garage, I observed my new Jeep on fire. The entire front end of the vehicle was engulfed in flames. Both front tires exploded as a result of the fire, and the entire front end was completely damaged. The interior is destroyed; basically totaled out. Vehicle was purchased with 11 miles on the odometer, and ended with about 17 total.

- Houston, TX, USA

problem #1

Jan 022012

Wrangler 6-cyl

  • 380 miles
My 2012 Wrangler with only 200 miles start to overheating when use more power to run uphill a road. I go to the dealer to verify and said to me that its normal. I said to theme that change me this Wrangler because was new and not change it with another. Also now at 987 miles the engine make a noise like a lifters. My question is, when the Wrangler won more miles the problems are more? I read on internet that some people have the same problems. Chrysler need to verify all pentastar engines.

- Naranjito, PR, USA

Not what you are looking for?